some people (myself included) have noticed improvements by disabling sound/music in game. you can do this by adding using -nosound and -nomusic in the the shortcut target. having no music isnt so bad, but no sound at all might be different. anyways, you can try em and see what happens.
This will certainly help in low-end configurations. Whilst most won’t even think its something that has anything to do with performance, it’s an entire rendering process you can disable giving just that bit more headroom.